Question

Which is the best estimate for the mass of a bicycle?

Answer 1

10 grams wouldn't make sense because a gram is about the weight of a paperclip and even 10 paper clips would not be anywhere close to the mass of the bicycle so we can eliminate this right away.

1,000 grams wouldn't make sense any either since a kilograms weighs about the size of a thick book and 1,000 grams is equal to 1 kilogram.

100 kilograms is way to heavy because 100 kilograms is around 100 large thick books stacked on top of each other.

This leaves us with 10 kilograms which

is the appropriate weight for a bicycle.